Inbaku Gakuen was my first hentai, a gateway drug of sorts for me, although my first exposure to it was the dubbed version, I enjoyed it greatly. It does show a lot of rape and blackmail, so word of warning if those are direct turnoffs for you. It's a rather old hentai, so keep that in mind as well. If you watch this, take it as something that came out in 2002, not a modern masterpiece, you'll enjoy it much more that way. I was a lot younger when I first watched this around 5-6 years ago and only recently rediscovered it. It's by nomeans my favorite hentai I've seen, but it means a lot to me.